CTL2.5U/BU is a triple level feed-through terminal block designed for high wiring density applications where space constraints are critical. This terminal block features a 6 mm width with dimensions of 67 x 84 mm (height x length), constructed from Polyamide 6.6 insulation material and equipped with 6 screw clamps and 3 tapped holes for cross connect. It accepts wire ranges from 22-12 AWG (0.5-2.5 sq.mm), with voltage ratings of 300 V (UL) and 500 V (IEC), current ratings of 25 A (UL) and 24 A (IEC), and requires a torque of 4.5 lb-in (0.4 Nm). The blue color variant (/BU suffix) is ideal for control systems, sensor applications, and instrumentation where signal and power connections need to be organized on separate levels while maximizing panel space efficiency.